Something happens on your WordPress site, and a new subscriber appears in your Mailchimp audience. The record maps straight across the instant the event fires — a direct, real-time connection built into WordPress itself, no extra plugin required.
What a WordPress Core → Mailchimp connection can do
When this happens in WordPress Core
What happens in Mailchimp
What the connection does in Mailchimp
Everything you need to know about the WordPress Core & Mailchimp integration
No. Install Integrazo Automator, authorise Mailchimp once, pick the WordPress event as the trigger, map the post, user and comment fields to Mailchimp merge fields and switch the connection on. There is no webhook URL to paste and no JSON to write.
The one you pick when you build the connection. Every subscriber it adds goes to that audience, with the merge fields and tags you set.
Yes. Every one of your post, user and comment fields is offered against every merge field on your Mailchimp audience — pick the ones you want mapped.
Not with Add Subscriber — Mailchimp itself rejects a repeat email rather than updating it. Use Add or Update Subscriber instead, and a matching email is updated rather than rejected.
Yes. Add a filter condition on any mapped field — contains, equals, starts with, is empty and the rest, combined with AND/OR — and only entries matching it are sent to Mailchimp. Everything else is skipped and still shows up in your Logs.
The run is logged as failed with the error Mailchimp returned, and the event is still saved in WordPress — nothing is lost. Once the problem is fixed, the next matching event goes through as normal.
No. The connection runs on your own WordPress site and talks to Mailchimp directly. The OAuth token is encrypted in your database, and there is no middleman service holding a copy of your data.
The core plugin is free on WordPress.org and covers a single connection. Pro adds unlimited connections, multiple audiences per connection, and tag automation, and priority support.